The performances of hydrological simulations for the Pearl River Basin in China were\nanalysed using the Coupled Land Surface and Hydrological Model System (CLHMS). Three datasets,\nincluding East Asia (EA), high-resolution gauge satellite-merged China Merged Precipitation Analysis\n(CMPA)-Daily, and the Asian Precipitation Highly-Resolved Observational Data Integration Towards\nEvaluation (APHRODITE) daily precipitation were used to drive the CLHMS model to simulate daily\nhydrological processes from 1998 to 2006. The results indicate that the precipitation data was the most\nimportant source of uncertainty in the hydrological simulation. The simulated streamflow driven by\nthe CMPA-Daily agreed well with observations, with a Pearson correlation coefficient (PMC) greater\nthan 0.70 and an index of agreement (IOA) similarity coefficient greater than 0.82 at Liuzhou, Shijiao,\nand Wuzhou Stations. Comparison of the Nash-Sutcliffe efficiency coefficient (NSE) shows that the\npeak flow simulation ability of CLHMS driven with the CMPA-Daily rainfall is relatively superior\nto that with the EA and APHRODITE datasets. The simulation results for the high-flow periods in\n1998 and 2005 indicate that the CLHMS is promising for its future application in the flood simulation\nand prediction.
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